Finnmark FD-5 Trinity XL Hybrid Infrared & Steam Sauna vs Golden Designs Forssa Edition 3-4 Person Sauna
Both models appear in our Best Home Saunas of 2026 comparison. This page sets their published specs side by side.
We have not tested these products hands-on. Everything here comes from manufacturer specifications and merchant listings, last checked Oct 1, 2026. Price buttons are affiliate links, and we may earn a commission at no extra cost to you.Affiliate disclosure
Key differences
The Golden Designs Forssa Edition 3-4 Person Sauna lists for $1,996 less than the Finnmark FD-5 Trinity XL Hybrid Infrared & Steam Sauna ($6,999 vs $8,995). Prices were checked on different dates and change often; check the merchant before you buy.
In our Best Home Saunas of 2026 comparison, the Finnmark FD-5 Trinity XL Hybrid Infrared & Steam Sauna is the Best Overall pick.
In our Best Home Saunas of 2026 comparison, the Golden Designs Forssa Edition 3-4 Person Sauna is the Best Value pick.
Side by side
"Not published" means our data has no figure from the maker or merchant. Warranty entries are what the listing said; check the maker's terms before you buy.
Price buttons are affiliate links. We may earn a commission at no extra cost to you.Affiliate disclosure
Exterior 75"W x 64"D x 83"H; interior 71"x57.5"x75.5"
75"W x 48"D x 78"H assembled
Power
240V, 18.8A, NEMA 5-15P plug — dedicated circuit
8kW stove requires a dedicated 240V/40A circuit; separate 120V/15A circuit for lighting and audio controls
Placement
Indoor
Indoor
Installation needs
Indoor installation; requires a dedicated 240V/18.8A circuit
Indoor installation; requires a dedicated 240V/40A circuit for the heater
Warranty (as listed)
10-year warranty on the entire sauna, with a lifetime warranty on the Spectrum Plus infrared heaters, as stated on The Sauna Place's dealer listing. Select Saunas' listing states a 2-year consumer warranty on the traditional heater only, so confirm cabin coverage with the dealer before purchasing.
Not published
Heaters
Spectrum Plus infrared array (2700W, max 170°F) plus Harvia KIP45B traditional heater (4.5kW, max 190°F)
Not published
Cabin Material
Antimicrobial Western Canadian Cedar interior, Thermo-Aspen exterior
Canadian Hemlock exterior, Red Cedar interior
Weight
Not stated on the manufacturer listing — confirm with your dealer before planning delivery
A 4-person hybrid cabin combining a 2700W full-spectrum infrared array with a 4.5kW Harvia KIP traditional heater, backed by a stated 10-year warranty.
Why we labeled it: The only 4-person hybrid here, adding infrared heating alongside traditional steam, with the strongest stated warranty in this comparison.
May suit: Families who want one cabin that covers both a quick infrared session and a full 4-person steam sauna; Buyers with 240V service already available or planned
In its favor
Stated 10-year warranty on the entire sauna, plus a lifetime warranty on the infrared heaters
Largest hybrid cabin in Finnmark's Trinity line — genuinely fits four adults
Estimated running cost as low as $0.30-0.40/hour on infrared mode per the manufacturer
Against it
Requires a dedicated 240V/18.8A circuit — an electrician is likely needed
Meaningfully heavier and larger than the 2-person FD-4 Trinity; measure doorways and delivery paths first
